#!/bin/bash
set -euE

cleanup_dirs=(
	dev
	proc
	run
	sys
	tmp
	var/cache/apt
	var/lib/apt/lists
	var/tmp
)

cleanup_files=(
	etc/apt/sources.list.d/localdebs.list
	etc/mailname
	# etc/ssh/ssh_host_*
	var/lib/dbus/machine-id
	var/log/alternatives.log
	var/log/apt
	var/log/bootstrap.log
	var/log/dpkg.log
	var/log/fai
	var/log/install_packages.list
)

empty_files=(
	etc/hostname
	etc/machine-id
	var/lib/dpkg/available
)

for i in "${cleanup_dirs[@]}"; do
	umount -l "$FAI_ROOT"/$i || :
	find "$FAI_ROOT"/$i -mindepth 1 -depth -delete
done

for i in "${cleanup_files[@]}"; do
	find "$FAI_ROOT"/$i -depth -delete || :
done

for i in "${empty_files[@]}"; do
	>"$FAI_ROOT"/$i
done

if ifclass BUILD_IMAGE; then
	fstrim "$FAI_ROOT"
fi
